You are probably using a cracked version of the game, in that case you'll have to wait for a scene release of a proper 1.5.05 crack. Right now, the only crack available for 1.5.05 basically uses files from the 1.5.04 version. So even if the game says it's version 1.5.05, you're using 1.5.04.

You have some choices right now: a) Wait for a proper crack to appear (we don't know how long that will take) b) Don't use the crack, but I bet you haven't actually bought the game so that's probably not an option c) Use an earlier version (1.5.04 probably), which is only an option if you are an unlimited member (or willing to pay $4,95)